Nitrotec Corporation

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5906673 Pressure swing system with auxiliary adsorbent bedMay 15, 97May 25, 99[B01D]
5792239 Separation of gases by pressure swing adsorptionJul 15, 96Aug 11, 98[B01D]
5707425 Helium recovery from higher helium content streamsMay 21, 96Jan 13, 98[B01D]
5632803 Enhanced helium recoveryAug 21, 95May 27, 97[B01D]
5542966 Helium recoveryOct 21, 94Aug 06, 96[B01D]
5536300 Natural gas enrichment processOct 21, 94Jul 16, 96[B01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4566282 Method and apparatus for inerting transport containersExpiredMar 19, 84Jan 28, 86[F17C]
4560393 Method of and arrangement for enriching the nitrogen content of an effluent gas in a pressure swing adsorption systemExpiredJan 28, 85Dec 24, 85[B03C, B01D]

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